Definitely this monster.
The Stooges,
Fun House. Gnarly punk rock, almost verging on hardcore, before either genre even existed. Side B brings in this insane free jazz saxophone. I bought it before I listened to jazz and it inadvertently helped win me over to the genre, and helped me understand and enjoy free jazz before I knew it was a thing. It totally changed my life. I listen to this a few times a week, at least. That's a pretty big deal for me, I usually don't listen to an album more than once within a few day's span unless I REALLY like it.